Two teens accused in the fatal stabbing of an Ellicott City man were brought before a judge for a bail review, and charging documents released Monday revealed their possible motive in the alleged killing.

The judge heard testimony Wednesday arguing that Morgan Lane Arnold should be tried as a juvenile. She is accused of plotting to kill her father, 58-year-old Dennis Lane, and his fiancée.

Judge William Tucker said he considered several factors, including age. She was 14 at the time of the killing. The judge also considered whether or not she could get treatment in the juvenile system, the nature of the crime and public safety.

The judge denied the request to move her to the juvenile system, saying he thinks she is a threat to public safety and that she had significant and complex mental health issues and that she needed treatment the juvenile system couldn't provide.

The judge also denied a request by Morgan Arnold's attorneys to pursue a not criminally responsible defense.

Cindi Arnold and attorneys for her daughter are considering other options and looking at other potential options concerning mental health.

"Morgan has profound mental illness. She was unfortunately influenced by a dark place at the time of the incident," Cindi Arnold said.

Dennis Lane was well-known in the community for his work in commercial real estate, a column in Business Monthly and as a blogger.

"We certainly sympathize with the family and acknowledge the seriousness of this and, you know, the loss of her father," Cindi Arnold said.

Cindi Arnold doesn't think her daughter could receive a fair trial in Howard County. She said the girl's father was well respected, well known and influential in the area.

"It's questionable whether she can even competently assist in her own defense. She can't even discuss," Cindi Arnold said.

Arnold's boyfriend, Jason Bulmer, has already pleaded guilty to stabbing Dennis Lane to death in May 2013.

Bulmer is now serving a 30-year prison sentence.

Morgan Arnold's defense attorneys contended she is not a danger to the public. They sought to have the case moved to juvenile court so she can receive treatment. Prosecutors argued that Arnold is a threat to public safety and should be tried as an adult on murder charges.

Prosecutors played jailhouse phone conversations in court between Arnold and her mom in court. In one of them, Arnold told her mother, "He tormented me, yelled at me constantly. He deserved to die."

In another recorded conversation, Arnold told her mother, "Every day of my life I wished he would die."

Her mom said the audio snippets were taken out of context.

"They were used in isolation and taken out of context. To explain more fully, my daughter was kept in solitary confinement for six and a half months," Cindi Arnold said. "My job as her mom was to comfort her."

Prosecutors said Arnold was sick of her father and pushed Bulmer to kill him. The two traded emails and Skype messages about killing Dennis Lane.

The judge said she could get mad at someone else and get another boyfriend to kill that person. The defense is seeking a way to resolve the case in her best interest.

"She is profoundly mentally ill. A child who is in the adult system, poses great challenges as her attorneys for us to resolve the case in a way where she won't just be warehoused," defense attorney Joe Murtha said.

The trial is set to start on Monday.

"The odds are not looking good for her now that she's lost the juvenile versus adult issue," said University of Baltimore law professor Byron Warnken.

He said her defense is facing an uphill battle.

"If the case is strong -- and it appears to me it is strong -- then her lawyer is going to try to work out the best possible deal for her rather than roll the dice and have 12 people on the jury say guilty. If it's first-degree murder and the jury says guilty, you are facing an absolute life sentence," Warnken said.

"Our request to pursue a defense of not criminally responsible would not be available to us at this time, but there are other potential defenses that relate to mental health that we're looking at, and we're in negotiations with the state to determine if we should request a postponement of the trial," Murtha said.

ALTERCATION. EVERY WORD IS BEING OFFERED. THE CASE WILL NOT BE TRANSFERRED TO JUVENILE COURT. IT WILL REMAIN IN THE ADULT SYSTEM. THE 16-YEAR-OLD IS ACCUSED OF PLOTTING TO KILL HER FATHER AND HAVE HER BOYFRIEND COMMIT THE MURDER. THE JUDGE ALSO TURNED DOWN ANOTHER DEFENSE MOTION. THE JUDGE ALSO DENIED A REQUEST TO PURSUE A DEFENSE AND THEY ARE CONSIDERING OTHER OPTIONS ARE REGARDING MENTAL HEALTH. IT IS EXTREMELY DISAPPOINTING. THANKS CINDY ARNOLD IS CONSIDERING OTHER OPTIONS NOW THAT OPTIONS TO TRANSFER HER MURDER CASE FAILED. MORGAN HAS PROFOUND MENTAL ILLNESS. SHE WAS UNFORTUNATELY INFLUENCED I SOME DARKER THINGS AT THE TIME OF THE INCIDENT. QUICK SHE IS ACCUSED OF PLOTTING TO MURDER HER FATHER IN GETTING HER BOYFRIEND TO KILL HIM. DENNIS LANE DIED IN MAY OF LAST YEAR AFTER HE WAS STABBED MALT WILL TIMES IN HIS LUMBEE HOME. WE CERTAINLY SYMPATHIZE WITH THE FAMILY AND ACKNOWLEDGE THE SERIOUSNESS OF THIS AND THE LOSS OF HER FATHER. 24-YEAR-OLD JASON BULMER PLEADED GUILTY. HER MOTHER SAID HER FATHER WAS QUESTION -- WELL-KNOWN. QUICK SHE CANNOT EVEN DISCUSS THIS. ARNOLD WAS 14 AT THE TIME OF THE KILLING. WHETHER SHE TO GET TREATMENT SHE NEEDED IN THE JUVENILE SYSTEM. THE CRIME ITSELF, AND PUBLIC SAFETY. THE JUDGE DETERMINED SHE HAS SIGNIFICANT AND COMPLEX MENTAL HEALTH ISSUES AND THERE WAS NO GUARANTEE SHE WOULD BE REHABILITATED. HE WORRIED ARNOLD REMAINS A PUBLIC SAFETY THREAT SAYING SHE COULD GET MANAGE SOMEONE ELSE AND GET ANOTHER BOYFRIEND KILL THAT PERSON. THE DEFENSE IS SEEKING A WAY TO RESOLVE THE CASE IN HER BEST INTEREST. QUICK SHE IS ROOM -- A PROFOUNDLY MENTALLY ILL CHILD WHO IS VULNERABLE AND NOW SHE IS IN THE ADULT SYSTEM AND IT POSES GREAT CHALLENGES FOR US AS HER ATTORNEYS TO RESOLVE THE CASE IN A WAY THAT SHE WILL NOT BE WAREHOUSED. MORGAN ARNOLD'S TRAILED IS SET TO BEGIN THIS MONDAY.